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Development of positron imaging technology for cesium kinetic analysis in plants and animals

Research Project

Project/Area Number 16K06962
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Nuclear engineering
Research InstitutionNational Institutes for Quantum and Radiological Science and Technology

Principal Investigator

SUZUI Nobuo  国立研究開発法人量子科学技術研究開発機構, 高崎量子応用研究所 放射線生物応用研究部, 主幹研究員(定常) (20391287)

Co-Investigator(Kenkyū-buntansha) 渡部 浩司  東北大学, サイクロトロン・ラジオアイソトープセンター, 教授 (40280820)
Project Period (FY) 2016-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2018: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2017: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2016: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywords放射性セシウム / PET / 非破壊計測 / ポジトロンイメージング
Outline of Final Research Achievements

We have developed a positron-emitting cesium tracer and realized non-destructive imaging of cesium dynamics in living animals and plants. First, we have established a method to produce and purify positron-emitting radionuclide, Cs-127 (half-life: 6.25 h). Next, we administered Cs-127 tracer to plants and analyzed the cesium kinetics in various plants using the Plant Research Positron Emission Imaging System (PETIS). Furthermore, we administered Cs-127 tracer to living animals and successfully visualized the cesium dynamics using positron emission tomography (PET).

Academic Significance and Societal Importance of the Research Achievements

本手法により動植物体内におけるセシウムの輸送メカニズムの解明や動態モデルの構築を行うことが可能となった。セシウム動態に関する基礎的な知見を収集することで、将来起こりうる原子力発電所でのシビアアクシデントに対する確率論的リスク評価(PRA: Probabilistic Risk Assessment)に繋げ、社会的意義の高い成果の発信が期待される。

Report

(5 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (4 results)

All 2017 2016

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results,  Acknowledgement Compliant: 1 results) Presentation (3 results) (of which Int'l Joint Research: 2 results)

  • [Journal Article] Visualization of zinc dynamics in intact plants using positron imaging of commercially available 65Zn2017

    • Author(s)
      Nobuo Suzui, Yong-Gen Yin, Satomi Ishii, Hitoshi Sekimoto, Naoki Kawachi
    • Journal Title

      Plant Methods

      Volume: 印刷中 Issue: 1

    • DOI

      10.1186/s13007-017-0188-0

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Presentation] Noninvasive imaging of zinc dynamics in an intact plant using commercially available radionuclide, 65Zn.2017

    • Author(s)
      Nobuo Suzui, Yong-Gen Yin, Satomi Ishii, Hitoshi Sekimoto, Naoki Kawachi
    • Organizer
      18th International Plant Nutrition Colloquium
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] 植物体内のセシウム動態を可視化するポジトロン放出トレーサの開発2017

    • Author(s)
      鈴井伸郎, 柴田卓弥, 尹 永根, 保科宏行, 藤巻 秀, 瀬古典明, 河地有木
    • Organizer
      日本土壌肥料学会2017年度仙台大会
    • Related Report
      2017 Research-status Report
  • [Presentation] Nobuo Suzui, Yong-Gen Yin, Satomi Ishii, Naoki Kawachi2016

    • Author(s)
      Noninvasive imaging of zinc movement in an intact plant using 65Zn
    • Organizer
      18th International Conference on Heavy Metals in the Environment
    • Place of Presentation
      Ghent (Belgium)
    • Year and Date
      2016-09-12
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research

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Published: 2016-04-21   Modified: 2021-02-19  

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